What changed in C++20?

What changed in C++20?

C++20 also adds a number of refinements to what can be achieved at compile time. Whereas constexpr functions silently change to execute at runtime when passed non-constant arguments, the new consteval keyword treats this as an error. Both string and vector have also both been adapted for use in constexpr functions.

Is it safe to use C++20?

If you just want to play around with C++20 features, odds are good that you can do so in some compiler for many C++20 features sometime in 2020. But if you want to actually produce a product that’s stable, it would be better to wait for compiler/library maturity until 2021 or 2022.

Has C++20 been released?

C++20 is a version of the ISO/IEC 14882 standard for the C++ programming language. C++20 replaced the prior version of the C++ standard, called C++17. The standard was technically finalized by WG21 at the meeting in Prague in February 2020, approved on 4 September 2020, and published in December 2020.

What is the current C++ version?

C++ 17 is the most recent version of C++ programming language revised by ISO/IEC 14882 standard. Its specification reached the DIS (Draft International Standard) stage in March 2017 and after approval, the final standard was published in December 2017.

When was C last updated?

C17 is the informal name for ISO/IEC 9899:2018, the most recent standard for the C programming language, prepared in 2017 and published in June 2018. It replaced C11 (standard ISO/IEC 9899:2011).

How many C language versions are there?

C Programming Language Version History

Version	Standard	Publication Date
K&R	n/a	1978-02-22
C89	ANSI X3.159-1989	1989-12-14
C90	ISO/IEC 9899:1990	1990-12-20
C95	ISO/IEC 9899/AMD1:1995	1995-03-30

How many C versions are there?

Let’s continue with a discussion of all the five different standards of C — K&R C, ANSI C, C99, C11 and Embedded C. For the purposes of our discussion, the compiler used is the gcc C compiler from the GNU Compiler Collection (GCC).